Last reviewed May 2026 · 1 min read
Is Fumaric Acid vegan?
Also known as: E297, Trans-butenedioic acid
E-number: E297
Vegan
Suitable for a vegan diet.
Yes — Commercial fumaric acid is produced synthetically or through the fermentation of sugar by fungi (Rhizopus).
01 · The basics
What is Fumaric Acid?
A naturally occurring acid in many fruits and mushrooms, used as an acidity regulator and to enhance flavor.
02 · The source
Where it comes from
Commercial fumaric acid is produced synthetically or through the fermentation of sugar by fungi (Rhizopus). It is vegan.
03 · Alternatives
Best vegan alternatives
Malic acid
Check Price on AmazonAffiliate links — VegOmm may earn a commission from qualifying purchases.
Frequently asked
FAQ
Is E297 vegan friendly?
Yes, it is 100% vegan and plant/fungi-derived.
Why is it in tortillas?
It acts as a dough conditioner and preservative, helping the tortillas stay soft and preventing mold growth.
Commonly found in
More in this category
Other acid ingredients
Keep exploring
Related ingredients
Allura Red AC
A popular synthetic red food dye used to give foods and drinks a prominent red or pink color.
Tartrazine
A bright lemon-yellow synthetic food dye commonly used in processed foods, drinks, and medications.
Brilliant Blue FCF
A synthetic blue dye used in foods, cosmetics, and dietary supplements to achieve a vibrant blue hue.
What's next